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US4014708A
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Liquid stoving-lacquer systems based on oil-free polyesters
Assignee: Bayer AG
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Filing: 1975-11-04
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Granted: 1977-03-29
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Expires: 1995-11-04
Abstract
Abstract Liquid stoving-lacquer systems based on oil-free polyesters obtained by reacting polybasic carboxylic acids or their anhydrides and 2-ethylpropane diol-1.3 and optionally additional polyhydric alcohols, are highly compatible with melamine resins.
Inventors
- 👤 Bernd-Ulrich Kaiser
- 👤 Rolf Dhein
- 👤 Rolf Kuchenmeister
- 👤 Hans-Michael Fischler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:05
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/20; C09; C09D; C09D167/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
112 words
Liquid stoving-lacquer systems based on oil-free polyesters of polybasic carboxylic acids, and/or their anhydrides and polyhydric alcohols which polyesters have an acid number of from 1 to 40 and a hydroxyl number of from 50 to 400, characterized in that the alcohol starting components of said polyesters consist of A. 30 - 100 mol-%, based on the sum of components A and B, of 2-ethylpropane diol-1.3, B. 70 - 0 mol-%, based on the sum of components A and B, of alcohols having from 2 to 6, preferably from 3 to 4, hydroxyl groups and optionally C. 0 - 30, preferably 0 - 20, mol-%, based on component A, of other diols.
Claim 2
Dependent Claim
112 words
Liquid stoving-lacquer systems based on oil-free polyesters of polybasic carboxylic acids, and/or their anhydrides and polyhydric alcohols which polyesters have an acid number of from 1 to 40 and a hydroxyl number of from 50 to 400, characterized in that the alcohol starting components of said polyesters consist of A. 30 - 100 mol-%, based on the sum of components A and B, of 2-ethylpropane diol-1.3, B. 70 - 0 mol-%, based on the sum of components A and B, of alcohols having from 2 to 6, preferably from 3 to 4, hydroxyl groups and optionally C. 0 - 30, preferably 0 - 20, mol-%, based on component A, of other diols.
Claim 3
Dependent Claim
23 words
Lacquer systems as claimed in claim 1, wherein a mixture of phthalic acid and adipic acid is used as the carboxylic acid component.
Claim 4
Dependent Claim
14 words
Lacquer systems as claimed in claim 1, wherein trimethylolpropane is used as component B.
Claim 5
Dependent Claim
18 words
Lacquer systems as claimed in claim 1, wherein they contain less than 30% by weight of a solvent.
Claim 6
Dependent Claim
32 words
The lacquer systems as claimed in claim 1 wherein said polyesters have a viscosity corresponding to a time of outflow of from 20 to 300 seconds in accordance with DIN 53 211.
References Cited (Backward Citations)
US2499984A
Cited
US3148147A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |